Would this be possible?

CyberneticNomad009

I have been using GrapheneOS for quite a while now, and I am very enthusiastic about the possibilities for a hardened OS, like GrapheneOS. I do not use a SIM card in my GrapheneOS phone, but use a hotspot for internet connection, and a VoIP for phone service.

Anyway, my suggestion is in regard to creating a hotspot version of GrapheneOS, still running on the same Pixel hardware, but with different functionality: being for a hardened mobile firewall and wifi router on the go. This way, the hotspot is not as vulnerable as it normally could be with the current hotspots.

Tandara

CyberneticNomad009 GOS already has a hardened firewall and can be used as you described, so no need for "custom" version. You can also install something like Rethink to filter domains.

Seven-of-nine

Good idea to use a (GrapheneOS) phone as mobile router, but my problem is that GrapheneOS changes IP address range every time starting tethering. So my question is, how to set a fixed IP range for the mobile access point?
Thanks for any help!

Johnnyloans

Don't think it's possible on GOS. However on the client side:

On your PC, write a small script to periodically query the ARP table and update your hosts file with the new ip address of your devices on the network as they come and go.

Cron or 'watch' pushed to the background can accomplish the repetition.

It'll map every device's Mac address to a hostname. Now use the hostname for all of your applications :)

172 one day, 10.1.1 The next, doesn't matter.

Perhaps there's a github repo that does this.